Mask with an adjustable strap



FIG. 1 is a perspective view of a mask with an adjustable strap of the present invention.

FIG. 2 is a front view of FIG. 1.

FIG. 3 is a back view of FIG. 1.

FIG. 4 is a left side view of FIG. 1.

FIG. 5 is a right side view of FIG. 1.

FIG. 6 is a top view of FIG. 1; and,

FIG. 7 is a bottom view of FIG. 1.

The broken lines in the drawings illustrate portions of the mask with an adjustable strap and form no part of the claimed design. 

CLAIM The ornamental design for a mask with an adjustable strap, as shown and described. 